Movable Wheelchair Structure

ABSTRACT

A movable wheelchair structure contains a base; a sliding mechanism fixed on the base and includes two rods extending outward from one side of the base, and each rod including an auxiliary wheel extending outward from one end portion thereof; a vertical moving mechanism fixed on the sliding mechanism; a frame fixed on one side of the vertical moving mechanism and moving vertically and horizontally with vertical moving mechanism and the sliding mechanism; a back support axially coupled with a rear end of the frame; a leg member axially connected with a front end of the frame, such that a user is capable of moving onto a bed or another position, enhancing usage at hospital and home.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a wheelchair structure, and moreparticularly to a movable wheelchair structure that is capable of movingvertically and horizontally so that a user moves onto the bed or anotherposition.

2. Description of the Prior Art

People who have body and mind barrier and the elder move by using awheelchair. But when they have to move from the wheelchair to anotherposition (such as a bed or a bath chair), because a height of thecushion of the wheelchair is not equal to that of another position, amovement difficulty will occur. Besides, such a movement difficulty willcause damage to their bodies.

To solve such a problem, auxiliary equipments such as a shiftingmachine) is developed. However, these auxiliary equipments are expensiveand space occupied, and when moving a user, a hanging loop and apositioning strap have to be fixed on the user, operating incontinentlyand time consumingly.

The present invention has arisen to mitigate and/or obviate theafore-described disadvantages.

SUMMARY OF THE INVENTION

The primary object of the present invention is to provide a movablewheelchair structure that is capable of adjusting a leaning angle of aback support and a leg member; and the frame, the back support, and theleg member move vertically and horizontally with the vertical movingmechanism and the sliding mechanism so that a user moves onto the bed oranother position, enhancing usage at hospital and home.

To obtain the above objective, a movable wheelchair structure providedby the present invention contains:

a base;

a sliding mechanism fixed on the base and includes two rods extendingoutward from one side of the base, and each rod including an auxiliarywheel extending outward from one end portion thereof;

a vertical moving mechanism fixed on the sliding mechanism;

a frame fixed on one side of the vertical moving mechanism and movingvertically and horizontally with vertical moving mechanism and thesliding mechanism;

a back support axially coupled with a rear end of the frame;

a leg member axially connected with a front end of the frame.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view showing the assembly of a movablewheelchair structure according to a preferred embodiment of the presentinvention;

FIG. 2 is a perspective view showing the exploded components of themovable wheelchair structure according to the preferred embodiment ofthe present invention;

FIG. 3 is a plan view showing the movable wheelchair structure beingadjusted to generate a leaning angle according to the preferredembodiment of the present invention;

FIG. 4 is a perspective view showing a driving wheel being removed fromone side of a base in a wheelchair type according to the preferredembodiment of the present invention;

FIG. 5 is a plan view showing the movable wheelchair structure beingraised in the wheelchair type according to the preferred embodiment ofthe present invention;

FIG. 6 is a perspective view showing the operation of the movablewheelchair structure in the wheelchair type according to the preferredembodiment of the present invention;

FIG. 7 is a perspective view showing a user moving from a bed to awheelchair according to the preferred embodiment of the presentinvention;

FIG. 8 is a perspective view showing the driving wheel being removedfrom the one side of the base in a bed plane type according to thepreferred embodiment of the present invention;

FIG. 9 is a perspective view showing an armrest being removed from oneside of a frame in the bed plane type according to the preferredembodiment of the present invention;

FIG. 10 is a perspective view showing the operation of the movablewheelchair structure in the bed plane type according to the preferredembodiment of the present invention;

FIG. 11 is another perspective view showing the operation of the movablewheelchair structure in the bed plane type according to the preferredembodiment of the present invention;

FIG. 12 is a perspective view showing the operation of the movablewheelchair structure when the user is in a laying posture according tothe preferred embodiment of the present invention;

FIG. 13 is a plan view showing the operation of the movable wheelchairstructure in the bed plane type according to the preferred embodiment ofthe present invention;

FIG. 14 is a perspective view showing the movable wheelchair structurebeing provided with an electrical device according to the preferredembodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The present invention will be clearer from the following descriptionwhen viewed together with the accompanying drawings, which show, forpurpose of illustrations only, the preferred embodiment in accordancewith the present invention.

With reference to FIGS. 1-2, a movable wheelchair structure according toa preferred embodiment of the present invention comprises a base 1, asliding mechanism 2, a vertical moving mechanism 3, a frame 4, a backsupport 5, a leg member 6, an angle adjusting mechanism 7, two drivingwheels 8, and two armrests 9, wherein the base 1 includes four rollers11 disposed on a bottom end thereof, two positioning posts 12 extendingupward from two sides thereof respectively, a supporting rack 13 fixedon one of the two sides thereof and having a stop portion 131 secured ona top end of the supporting rack 13; the sliding mechanism 2 is fixed onthe base 1 and includes two slidable rails 21 arranged on a front and arear ends thereof individually, and each slidable rail 21 includes amovable seat 22 formed thereon, the movable seat 22 includes a rod 23extending outward from one side thereof, and the rod 23 includes anauxiliary wheel 24 extending outward from one end portion thereof so asto movably extend out of one side of the base 1 with the movable seat 22and to be supported by the auxiliary wheel 24. The vertical movingmechanism 3 is fixed on the sliding mechanism 2 and includes a pillar 31to move vertically and two auxiliary telescopic tubes 32, the pillar 31is defined between two movable seats 22 of the sliding mechanism 2 andincludes a swing bar 311 disposed on a top end thereof to be manuallyoperated to further move upward and downward, and the two auxiliarytelescopic tubes 32 are fixed on two top surfaces of the two movableseats 22 of the sliding mechanism 2 respectively, one side of the frame4 is connected with the vertical moving mechanism 3 in a retaining andfitting manner to move vertically and horizontally with the verticalmoving mechanism 3 and the sliding mechanism 2, and another side of theframe 4 is fixed on the stop portion 131 of the supporting rack 13 ofthe base 1, obtaining a support and positioning effect so that the frame4 is fixed securely. The frame 4 further includes two holes 41 formed oneach of two sides thereof, and the back support 5 is axially coupledwith a rear end of the frame 4, the leg member 6 is axially connectedwith a front end of the frame 4. The angle adjusting mechanism 7includes an expanding and retracting device 71, a connecting stem 72,and a controller 73, wherein the expanding and retracting device 71 isdefined between the frame 4 and the back support 5 to adjust a leaningangle of the back support 5, and the connecting stem 72 is definedbetween the back support 5 and the leg member 6 so that the leg member 6is actuated to move by the back support 5 which is adjusted to lean atan angle. The controller 73 is fixed between the frame 4 and the backsupport 5 to control the expanding and retracting device 71 to move, andthe two driving wheels 8 are positioned between the two positioningposts 12 of the two sides of the base 1, each of the two armrests 9includes two insertions 91 extending downward from a bottom end thereofso as to be inserted into the holes 41 of the frame 4 by using theinsertions 91.

As shown in FIG. 3, in operation, the controller 73 releases theexpanding and retracting device 71 to adjust the leaning angle of theback support 5, and then the connecting stem 72 actuates the leg member6 to adjust the back support 5, the leg member 6, and the frame 4 sothat a bed plane type or a wheelchair type at a proper angle is formedamong the back support 5, the leg member 6, and the frame 4.

Referring to FIGS. 4-6, when desiring to move in the wheelchair type,the driving wheel 8 on the same side as the rod 23 which extends outwardfrom one side of the sliding mechanism 2 is removed, and the swing bar311 is rotated to adjust a height of the pillar 31 so that the frame 4is actuated to move toward a suitable height and to disengage from thestop portion 131 of the supporting rack 13 of the base 1, such that themovable seats 22 of the sliding mechanism 2 slide on the slidable rails21 so that the frame 4 slides toward the one side of the base 1laterally with the back support 5 and the leg member 6, and the rods 23movably extend out of the one side of the base 1 with the movable seats22 and are supported by the auxiliary wheels 24.

As illustrated in FIG. 7, when the driving wheel 8 and the armrest 9 areremoved from the one side of the base 1, the frame 4 which does notslide outward laterally or slides outward laterally to the one side ofthe base 1 is provided to move a user from a wheelchair to anotherposition or from another position to the wheelchair.

With reference to FIGS. 8-10 and 5, when desiring to move in the bedplane type, the driving wheel 8 and the armrest 9 on the same side asthe rod 23 which extends outward from the one side of the slidingmechanism 2 are removed, and the swing bar 311 is rotated to adjust theheight of the pillar 31 so that the frame 4 is actuated to move upwardto a suitable height and to disengage from the stop portion 131 of thesupporting rack 13 of the base 1, such that the movable seats 22 of thesliding mechanism 2 slide on the slidable rails 21 so that the frame 4slides toward the one side of the base 1 laterally with the back support5 and the leg member 6, and the rods 23 movably extend out of the oneside of the base 1 with the movable seats 22 and are supported by theauxiliary wheels 24. As shown in FIGS. 11 and 12, the back support 5,the leg member 6, and the frame 4 are provided to form a bed plane sothat the user moves from the wheelchair to the bed or from the bed tothe wheelchair in a laying posture. In addition, when a height of thebed is different from that of the back support 5 of the wheelchair asillustrated in FIG. 13, the swing bar 311 is rotated to adjust theheight of the pillar 31, and then the frame 4, the back support 5, andthe leg member 6 are actuated simultaneously to be moved verticallytoward a desired height.

Referring to FIG. 14, the sliding mechanism 2 and the vertical movingmechanism 3 are provided with an electrical device 10 so as to beactuated by the electrical device 10.

Thereby, the movable wheelchair structure of the present invention hasthe following advantages:

1. The back support 5, the leg member 6, and the frame 4 are capable ofbeing adjusted to generate the bed plane, and then the frame 4, the backsupport 5, and the leg member 6 move vertically and horizontally withthe vertical moving mechanism 3 and the sliding mechanism 2 so that theuser moves onto the bed or another position, enhancing usage at hospitaland home.

2. The driving wheel 8 and the armrest 9 are movably removed, and theframe 4, the back support 5, and the leg member 6 are removed from thebase 1 easily, thus decreasing a size and a transposition cost of thewheelchair. Also, the wheelchair is portable or stored conveniently.

While we have shown and described various embodiments in accordance withthe present invention, it is clear to those skilled in the art thatfurther embodiments may be made without departing from the scope of thepresent invention.

1. A movable wheelchair structure comprising: a base; a slidingmechanism fixed on the base and includes two rods extending outward fromone side of the base, and each rod including an auxiliary wheelextending outward from one end portion thereof; a vertical movingmechanism fixed on the sliding mechanism; a frame fixed on one side ofthe vertical moving mechanism and moving vertically and horizontallywith vertical moving mechanism and the sliding mechanism; a back supportaxially coupled with a rear end of the frame; a leg member axiallyconnected with a front end of the frame.
 2. The movable wheelchairstructure as claimed in claim 1, wherein the base includes a pluralityof rollers disposed on a bottom end thereof.
 3. The movable wheelchairstructure as claimed in claim 1, wherein the base includes twopositioning posts extending upward from two sides thereof respectivelyto connect with two driving wheels respectively.
 4. The movablewheelchair structure as claimed in claim 1, wherein the base includes asupporting rack fixed on one side thereof, and the support rack has astop portion secured on a top end thereof.
 5. The movable wheelchairstructure as claimed in claim 1, wherein the sliding mechanism includestwo slidable rails arranged on a front and a rear ends thereofindividually, and each slidable rail includes a movable seat formedthereon, the movable seat includes the rod extending outward from oneside thereof.
 6. The movable wheelchair structure as claimed in claim 1,wherein the vertical moving mechanism includes a pillar to movevertically and two auxiliary telescopic tubes.
 7. The movable wheelchairstructure as claimed in claim 1, wherein one side of the frame isconnected with the vertical moving mechanism in a retaining and fittingmanner.
 8. The movable wheelchair structure as claimed in claim 1,wherein the frame includes two armrests disposed on two sides thereofindividually.
 9. The movable wheelchair structure as claimed in claim 1further comprising an angle adjusting mechanism to adjust a leaningangle of the back support and the leg member.
 10. The movable wheelchairstructure as claimed in claim 9, wherein the angle adjusting mechanismincludes an expanding and retracting device, a connecting stem, and acontroller, the expanding and retracting device is defined between theframe and the back support, and the connecting stem is defined betweenthe back support and the leg member, the controller is used to controlthe expanding and retracting device to move.